BSOD randomly - ntfs.sys (minidump help)

Hi everybody my computer crashing at any time. While I'm just using the computer normally, it shuts down into a BSOD. Sometimes is "DRIVER_IRQL_NOT_LESS_OR_EQUAL" and sometimes is "NTFS.SYS PAGE_FAULT_IN_NON_PAGED_AREA). I've tried to format, reinstall, new drivers but it exactly the same. The minidump files created since this problem has occurred are attached. If someone can read them and help me it would be greatly appreciated. Sorry for my english. I'm from Spain.